WHAT DOES ROLLING BLUETOOTH SPEAKER WITH MICROPHONE MEAN?

It's a smart speaker that connects with Wi-Fi, Bluetooth and Apple AirPlay. You can pair the Transfer two with other Sonos speakers in your home to make a broader sound system. Plus you can use the Sonos line-in adapter (marketed separately) to connect it to other audio resources like turntables, making it a lot more flexible than our other major p